A CASE OF RECTOSIGMOID CANCER ASSOCIATED WITH JAPANESE SCHISTOSOMIASIS

Abstract

We report a case of rectosigmoid cancer associated with Japanese Schistosomiasis. A 69-year-old man visited our hospital following bloody stool. Colonoscopy showed a circled type 2 tumor of the rectosigmoid (RS). Laparoscopy assisted high anterior resection was performed. Pathological findings demonstrated tub1, SS, med, INFb, ly1, v2, N1, PM0, DM0, RM0. Furthermore, ova of Japanese Schistosomiasis were also seen in the resected colon tissue.
The patient had lived in Numazu, Shizuoka prefecture, an endemic area of Japanese Schistosomiasis. Prevalence in Japan ended over twenty years ago, therefore this case was considered to be an old lesion.